Compression Refrigeration System
(AR-045_)
  • Function and operational behavior of the refrigeration circuit components
  • Operation with expansion valve or with capillary tubes of different lengths
  • Under-filling or overfilling with refrigerant
  • Thermodynamic cycle in the log p-h diagram
  • From the log p-h diagram and in comparison with the measured values
    • Determination of the refrigeration capacity
    • Determination of the coefficient of performance
    • Determination of the efficiency of the compressor
  • Compressor
    • Power consumption: 213W at 7,2°/32°C
    • Refrigeration capacity: 372W at 7,2/32°C
  • Condenser and evaporator with fan
    • Max. Volumetric air flow rate condenser: 300m3/h
    • Max. Volumetric air flow rate evaporator: 180m3/h
  • Capillary tubes: 1,5m, 3m, 6m
  • Receiver for refrigerant: 1,3L
  • Refrigerant
    • R513A
    • GWP: 631
    • Filling volume: 2kg
    • CO2-equivalent: 1,3t
  • Measuring Ranges
    • Pressure: -1.....9bar / -1......24bar
    • Temperature: 4x -40…150°C, 1x -100…100°C
    • Flow rate: 2…18m3/h
    • Power consumption: 0…1000W
  • Compression Refrigeration Training System (AR - 045)
  • Hard Copy User manual

The educational unit is designed to illustrate the compression refrigeration system. The trainer is provided with all necessary components to investigate the system operation and perform wide range of experiments.

  • The education unit consists of a vertical stand to demonstrate the compression refrigeration circuit components to the trainees.
  • The refrigeration circuit consisting of a hermetic compressor, condenser, evaporator and expansion element.
  • Finned tube heat exchangers are used to act as the evaporator and the condenser.
  • The pipes of both heat exchangers are transparent.
  • Three capillary tubes of different lengths and a thermostatic expansion valve are provided to be compared as expansion elements.
  • The trainer is equipped with a receiver for refrigerant so that the refrigerant can be added to or removed from the refrigeration circuit to allow investigation of the effects of the system overfilling or under-filling.
  • The educational unit is supplied with sensors to record temperature and pressure in the refrigeration circuit and the electrical power consumption of the compressor.
  • The measured values are demonstrated on digital displays.
  • The flow rate of the refrigerant is determined by means of the pressure measurement.
  • At the same time, the measured values can also be transmitted directly to a PC via USB.
  • The educational unit is equipped by DAQ software.
  • Changes in the refrigeration circuit parameters can be viewed dynamically in the software’s log p-h diagram.
  • The unit is fixed on four caster wheels to eases its motion inside the laboratory, these caster wheel are equipped with brakes to prevent the trainer from sliding during the operation, and a drawer cabinet is added for storing purposes.
  • The unit is treated against rust and electrostatically painted.